Minor Planet Radar Database
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232691 (2004 AR1)
Classification: APO [NEO, PHA]
H:19.8 mag, G:0.15

  MPC page for this object   |  JPL SBDB page for this object   |  NEODyS-2 page for this object   |  ESA SSA page for this object  

History of Radar Detections
Year Month Transmitter Receiver Frequency Obs
2013 Aug Goldstone Goldstone 8560 [G]
2013 Aug Arecibo Arecibo 2380 [A]

Radar-Based Physical Properties
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Orbital Elements at Epoch 2019-04-27 00:00 TT from MPO440203 (heliocentric ecliptic J2000)
Element Value Units
e 0.4694502
a 1.5764113 AU
i 9.07604 deg
om 336.5319 deg
w 50.27093 deg
ma 290.41167 deg
n 0.49796609 deg/d

Link to complete orbital information at Minor Planet Center

Earth Close-Approach Data (+/- 10 years)
date nominal distance RTT SNR/run at Arecibo
2009-10-15 13:22:00 0.19176 191.4 1.4
2011-09-17 13:58:00 0.14436 144.1 3.8
2012-01-08 00:41:00 0.47558 474.6 0.1
2013-08-25 02:34:00 0.05430 54.2 113.6
2015-08-13 15:37:00 0.07481 74.7 37.5
2017-08-04 12:36:00 0.19171 191.3 1.4
2019-07-28 14:04:00 0.31972 319.1 0.2
2021-07-20 23:19:00 0.45000 449.1 0.1

Link to complete Close-Approach Data on SBDB at JPL